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http://dx.doi.org/10.5423/PPJ.2010.26.1.080

First Report of Black Spot Caused by Alternaria alternata on Grafted Cactus  

Choi, Min-Ok (Department of Agricultural Biotechnology, Seoul National University)
Kim, Sang-Gyu (Department of Agricultural Biotechnology, Seoul National University)
Hyun, Ik-Hwa (National Plant Quarantine Service)
Kim, Jeong-Ho (Korea Turfgrass Institute, Subsidiary of Korea Golf Course Business Association)
Cho, Chang-Hui (Cactus Research Institute, Gyeonggi-do Agricultural Experimental Station)
Park, Myung-Soo (Chemical Biotechnology Research Center, KRICT)
Kim, Young-Ho (Department of Agricultural Biotechnology, Seoul National University)
Publication Information
The Plant Pathology Journal / v.26, no.1, 2010 , pp. 80-82 More about this Journal
Abstract
A stem spot disease was observed on Gymnocalycium mihanovichii (Korean name: Bimoran), a scion of graftcactus, in major growing areas of Goyang and Eumseong, Korea during 2008 and 2009. Typical symptoms were initial blackish brown lesions produced mainly on areoles and scars of injured stem tissues, gradually becoming large black spots. A causal organism isolate CD2-7A isolated from the infected stems was identified as Alternaria alternata based on its morphological characteristics and confirmed by the DNA sequencing analysis of ITS, glyceraldehydes-3-phosphate dehydrogenase (gpd), and allergen Alt a1 (Alt a 1) genes. Artificial inoculation of the fungal isolate CD2-7A produced the same rot symptoms on the cactus stems, from which the same fungus was isolated and identified. This is the first report of the black spot caused by A. alternata in the grafted cactus.
Keywords
Alternaria alternata; graft-cactus; Gymnocalycium mihanovichii; pathogenicity;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
Times Cited By Web Of Science : 2  (Related Records In Web of Science)
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